Duplicate id on stylesheet inserted with ResourceDependency

[Nicolas Labrot]

Hello,

I'm glad to post my first message on this ml ;)

I have the infamous but well known duplicate id behaviour with the
following code:
    <h:form>
        <p:commandButton action="#{sessionBean.add}" value="add"
update=":myForm"/>
        <p:commandButton action="#{sessionBean.reset}" value="reset"
update=":myForm"/>
    </h:form>

    <h:form id="myForm">
        <c:forEach items="#{sessionBean.values}" var="value">
            <ui:include src="#{value}"/>
        </c:forEach>
    </h:form>

At the beginning "sessionBean.values" is empty.
Action 1 : User clicks on "add", the add action adds "form0.xhtml" to
"sessionBean.values".
Action 2 : User clicks on "add", the add action adds "form1.xhtml" to
"sessionBean.values".

*form0.xhtml contains : *
<p:fileUpload auto="false"  mode="advanced" required="true"
                      fileUploadListener="#{sessionBean.handleFileUpload}"/>
*
*
*form1.xhtml contains :*
<h:outputText value=""/>

My issue is action 2 returns a duplicate id exception:<partial-response>

<error><error-name>java.lang.IllegalStateException</error-name>
<error-message><![CDATA[component with duplicate id "j_id4" found]]>
</error-message></error></partial-response>


j_id4 is the stylesheet of the fileUpload component :
@ResourceDependency(library="primefaces", name="fileupload/fileupload.css"),

This stylesheet is inserted with action 1. And it seems myfaces tries to
insert it with action 2 too.

Do I do something wrong ?

Thanks for your help!

Nicolas